PT-2026-49683 · Mozilla · Firefox+1

Satyamasd · Published 2026-06-16 · Updated 2026-06-16 · CVE-2026-12314

Positive Technologies (AI Summary)

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 152 Firefox ESR versions prior to 140.12 Thunderbird versions prior to 152 Thunderbird versions prior to 140.12

Description A memory safety bug exists that could lead to unexpected behavior or crashes.

Recommendations Update Firefox to version 152. Update Firefox ESR to version 140.12. Update Thunderbird to version 152. Update Thunderbird to version 140.12.

Related Identifiers

CVE-2026-12314

Affected Products

Firefox

Thunderbird

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2026-12314 · Security Note
• https://mozilla.org/security/advisories/mfsa2026-60 · Vendor Advisory
• https://mozilla.org/security/advisories/mfsa2026-61 · Vendor Advisory
• https://mozilla.org/security/advisories/mfsa2026-58 · Vendor Advisory
• https://mozilla.org/security/advisories/mfsa2026-57 · Vendor Advisory
• https://bugzilla.mozilla.org/show_bug.cgi?id=2041856 · Note